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US2689989A
|
|
Casting apparatus
|
|
US2708104A
|
|
Core drill
|
|
US2673180A
|
|
Production of electrolytic zinc
|
|
US2699388A
|
|
Method and apparatus for making metallic iron
|
|
US2716600A
|
|
Method of recovering copper from sulfidic copper ore
|
|
US2625952A
|
|
Dispensing apparatus
|
|
US2609095A
|
|
Apparatus for sorting heavy bars
|
|
US2546362A
|
|
Apparatus for handling heavy slabs and other material
|
|
US2529291A
|
|
Apparatus for applying mold wash
|
|
US2536877A
|
|
Cathode
|
|
US2513224A
|
|
Hoist drawbar
|
|
GB655874A
|
|
Antifouling composition
|
|
US2606778A
|
|
Rock drill rod joint
|
|
US2475676A
|
|
Apparatus for the recovery of copper
|
|
US2478077A
|
|
Apparatus for protecting furnace tuyeres
|
|
US2398896A
|
|
Drill-bit carrier
|
|
US2479449A
|
|
Automatic dump skip
|
|
US2554575A
|
|
Magnetic detector
|
|
US2357488A
|
|
Recovery of vanadium
|
|
US2357466A
|
|
Beneficiation of vanadium compounds
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